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2002 Gmc 2500hd Leveling Cog Comparison

Here you can see the difference between a stock cog (bottom) and a new ORU cog. The ORU cog is keyed differently to rotate the torsion bar, thus raising the front suspension height.
1999-2007 Chevy 1500 2500HD Leveling Kit - On The Level

 Here you can see the difference between a stock cog (bottom) and a new ORU cog. The ORU cog is keyed differently to rotate the torsion bar, thus raising the front suspension height.  View Related Article

 

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